#include <stdio.h>
#include <stdlib.h>
int main() {
    int n,m;
    int *a;
    scanf("%d",&n);
    a = (int *)calloc(n, sizeof(int));
    int i;
    for (i = 0; i < n; ++i) {
        scanf("%d",&m);
        a[i] = m;
    }
    int j = 0;
    for (; j < n; ++j) {
        printf("%c",a[j]);
    }
}
